CN101124514B - Color image projection arrangement and method - Google Patents
Color image projection arrangement and method Download PDFInfo
- Publication number
- CN101124514B CN101124514B CN2006800032824A CN200680003282A CN101124514B CN 101124514 B CN101124514 B CN 101124514B CN 2006800032824 A CN2006800032824 A CN 2006800032824A CN 200680003282 A CN200680003282 A CN 200680003282A CN 101124514 B CN101124514 B CN 101124514B
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- projection equipment
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- image
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/008—Projectors using an electronic spatial light modulator but not peculiar thereto using micromirror devices
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminatedto produce an image of high resolution of VGA quality in color.
Description
Technical field
The present invention relates generally to the projection Two-dimensional Color Image, keep lower power consumption, higher resolution, the size of small compact, muting operation and minimum vibration simultaneously.
Background technology
As everyone knows, can be based on vibrating with a pair of scanning mirror projection two dimensional image on screen by the raster scanning laser beam in mutually orthogonal direction.Yet the image of known image projection systems has finite resolution, typically be lower than 640 * 480 pixels Video Graphics Array (VGA) quality 1/4th, and right and wrong are very color.The physical size of known optical projection system is relative with power consumption higher, and it is unpractical thus they being used for application small-sized, hand-held, battery operation.Equally, during use, the low sweep speed of scanning mirror generates tedious noise and vibration.
Summary of the invention
Therefore, general objects of the present invention provides a kind of image projection equipment, and it goes out sharp keen and Two-dimensional Color Image clearly in the distance range projection away from the prolongation of equipment.
Another object of the present invention is that the power consumption in this projector equipment is reduced to minimum.
Also purpose of the present invention is the resolution that improves by the coloured image of this equipment projection.
Another object of the present invention is if can not eliminate, and just alleviates the tedious noise and the vibration of run duration.
Other purpose provides useful small-sized, compact, light weight and portable color image projection arrangement in the equipment of a plurality of different profile factor.
The purpose consistent with these purposes and other purpose will be conspicuous hereinafter, and in brief, a characteristic of the present invention is to be used for the image projection equipment of projection two dimension, coloured image.This equipment comprises support, it is red to be used for launching respectively, a plurality of red, the indigo plant of indigo plant and green laser beam and green laser; Be used for the scanner of the pattern of inswept sweep trace on operating distance (working distance) space at support, every sweep trace has a plurality of pixels; And be used for impelling selected pixel illuminated, and make as seen to produce the controller of coloured image by laser beam.
According to an aspect of the present invention, on the support between laser instrument and the scanner, provide an optical module, be used for optical focus and conllinear and arrange laser beam to form the synthetic light beam that points to scanner.
In a preferred embodiment, scanner comprises a pair of scanning mirror that vibrates, and is used for different sweep speeds and the different common mutually orthogonal inswept synthetic light beams of direction in scan angle edge.At least one sweep speed surpasses the frequency that can hear, for example on the 18kKHz, to reduce noise.At least one scanning mirror is driven so that power consumption is reduced to minimum by inertia starter.The resolution of image preferably surpasses 1/4th of VGA quality, but typically equals or exceeds the VGA quality.Preferred described support, laser instrument, scanner, controller and optical module take the volume less than 30 cubic centimetres.
This equipment is installed in the shell of different profile factor interchangeably, including, but not limited to, the equipment of the form of a stroke or a combination of strokes, rifle shape or torch tubular, personal digital assistant, pendicle, wrist-watch, computing machine, and in brief, any owing to its compactness and shape miniature sizes.The image of institute's projection can be used to the purpose of advertisement or sign, perhaps is used for televisor or computer monitor screen, and in brief, is used for any purpose of desired display something.
Description of drawings
Fig. 1 is at the skeleton view apart from the hand-held device of its operating distance place projected image;
Fig. 2 is amplification, upper strata, the skeleton view according to the image projection equipment of the present invention in the device that is installed in Fig. 1;
Fig. 3 is the top plan view of the equipment of Fig. 2;
Fig. 4 is the front perspective view of inertia starter that is used for the equipment of Fig. 2;
Fig. 5 is the back perspective view of the inertia starter of Fig. 4;
Fig. 6 is the skeleton view of actual realization of the equipment of Fig. 2; And
Fig. 7 is the electric schematic functional block diagram of operation of the equipment of depiction 2.
Embodiment
As shown in Figure 1, image 18 is along the optical level scan angle A that extends on the horizontal direction of image, and extending along the optics vertical scan angle B that extends on the vertical direction of image.As described below, this image is made up of irradiated on the raster pattern by the inswept sweep trace of the scanner in the equipment 20 and not irradiated pixel.
In a preferred embodiment, measure the volume of equipment 20 less than about 30 cubic centimetres.This compactness, miniature dimensions allow equipment 20 to be installed in a plurality of difform, large-scale or small-sized, portable or fixed housings, comprise that some has the shell of display 12 on the plate, keyboard 14 and window 16, is projected by these image of component.
Referring to figs. 2 and 3, equipment 20 comprises solid-state, is preferably semiconductor laser 22, when it is energized, launches the bright red laser beam of about 635-655 nanometer.Lens 24 are inclined to one side sphere (biaspheric) convex lens with positive focal length, and it is operated with in fact all energy in the gathering red beam, and is used to produce the diffraction limited light beam.Lens 26 are the concavees lens with negative focal length.Lens 24,26 are gone up corresponding lens separately by the support (illustrating) of device 10 inside of not illustrating and are fixed in Fig. 2 for the purpose of clear.The profile of lens 24,26 shaping red beam on operating distance.
Another is solid-state, semiconductor laser 28 is rack-mount, and launches the diffraction limited blue laser beam of about 475-505 nanometer when it is energized.Adopt other inclined to one side spherical male lens 30 and concavees lens 32 with the be shaped profile of blue light beam of the mode that is similar to lens 24,26.
Green laser beam with 530 nano level wavelength is not produced by semiconductor laser, but produce by the green module 34 with the infrared pump diode YAG of having of 1060 nanometer output beams crystal laser.Non-linear frequency-doubling crystal is included in two infrared laser chambeies between the laser mirror.Because the infrared laser power in the chamber is far longer than the energy of coupling outside the chamber, frequency multiplier more effectively generates the frequency multiplication green light in the chamber.The output reflection of laser instrument is reflected to the infrared ray of 1060 nanometers, and is transmitted into 530 nano green laser beam of twice.Because the correct operation of solid-state laser and frequency multiplier needs precise dose control, the semiconductor devices that relies on Peltier effect is used to control the temperature of green laser module.Thermoelectric (al) cooler can heat or cool off this device according to the polarity of applied electric current.In order to monitor its temperature, with the part of thermistor as green laser module.Be fed to controller from reading of thermistor, controller correspondingly is adjusted to the Control current of thermoelectric (al) cooler.As explained below, with the frequency of 100MHz level laser is carried out the pulsed modulation operation.Red and blue semiconductor laser 22,28 can carry out pulsed modulation with high like this frequency, but current available green solid-state lasers then can not be carried out pulsed modulation with high frequency like this.As a result, the green laser beam of using acousto-optic modulator 36 pulsed modulations to withdraw from from green module 34, acousto-optic modulator 36 produces standing acoustic waves at crystals and goes out blue beam with diffraction.Yet modulator 36 produces zero level, non-diffracted beam 38 and the first order, pulse, diffracted beam 40. Light beam 38,40 mutual bifurcateds, and for they are separated to eliminate undesired zero order beam 38, light beam 38,40 is sent out along the length with folding mirror 42, folding path.Alternatively, electric light, modulator can be used to the outside or inner with the pulsed modulation green laser beam of green laser module.Other possible method of modulation green laser beam comprises electro-absorption modulation, perhaps the March-Zender interferometer.Light beam 38,40 sends by positive and negative lens 44,46.Yet, only allow diffracted green beam 40 bump folding mirrors 48, and from folding mirror 48 reflections.The absorber 50 that non-diffracted beam 38 is preferably mounted on the catoptron 48 absorbs.
This equipment comprises that a pair of arrangement is used to make green, indigo plant and the red beam dichroic filter 52,54 of conllinear as far as possible before arriving scan components 60.Light filter 52 allows green beams 40 therefrom to pass, but is reflected by interference effect from the blue light beam 56 of blue laser 28.Light filter 54 allows green and blue light beam 40,56 therefrom passes, and still the red beam 58 from red laser 22 is reflected by interference effect.
Inertia starter 66 is assemblies of a high speed, low electrical power consumed.The detailed description of inertia starter can find as the application and in this merging U.S. Patent Application Serial Number No, 10/387,878 as a reference in the common assignee that transfers that on March 13rd, 2003 proposed.The use of inertia starter makes the power consumption of scan components 60 be reduced to be lower than 1 watt, and as described below being reduced under the situation of projection of color images is lower than 10 watts.
Framework, hinge part and scanning mirror are made into a slice and are approximately the thick silicon chip that is generally the plane of 150 μ, and this silicon chip is etched to have the groove crack part of upper parallel, the groove crack part of lower parallel and the Ω shape groove crack of U-shaped central channel crack part with formation.Scanning mirror 64 is preferably ellipse, and can freely move in the part of groove crack.In a preferred embodiment, measure along the axle of oval-shaped scan mirror and be of a size of 749 μ * 1600 μ.The width of each hinge part is 27 μ, and length is 1130 μ.This framework is the rectangle that 3100 μ are wide and 4600 μ are long.
Inertia starter be installed in be generally the plane, on the printed circuit board (PCB) 80, and operation is with direct travelling frame, and utilizes inertia that scanning mirror 64 is vibrated around hinge axis.An embodiment of inertia starter comprises the piezoelectric transducer 82,84 that extend perpendicular to the direction of circuit board 80 on a pair of edge, and contacts with the separating part of framework 74 in any side of hinge part 76.Can use bonding agent with permanent connection the between the end of guaranteeing each transducer and each frame part.The back side of the terminal slave plate 80 that each transducer is opposite is stretched out and is electrically connected to periodically AC power (not shown) by line 86,88.
In use, cyclical signal is applied to each transducer with periodic drive voltage, and impels corresponding transducer length alternately to extend and contraction.When transducer 82 extended, transducer 84 just shrank, and vice versa, side by side pushed away thus and drew with the frame part of spaced apart and impel this frame loops to reverse around hinge axis.Driving voltage has the frequency corresponding to the resonance frequency of scanning mirror.Scanning mirror moves up to it from the position of its initial rest and vibrates around hinge axis with resonance frequency.In a preferred embodiment, the thickness of described framework and scanning mirror is approximately 150 μ, and scanning mirror has higher Q factor.Moving of each transducer 1 μ level can impel to surpass the sweep speed oscillatory scanning mirror of 20kHz.
Another extends along the vertical direction of plate 80 piezoelectric transducer 90,92, and forever contacts with the separating part of framework 74 in any side of hinge part 78.Transducer 90,92 is used as the feedback device that the vibration that monitors framework is moved, and be used for generating and conduct electrical feedback signals along line 94,96 to the feedback control circuit (not shown).
Our novel designs is actually utilizes a pair of piezoelectric type element to drive (in other words, we utilize two piezoelectricity together to shrink and to stretch).For feedback, we utilize magnetic feedback, are installed in the back side of high-speed mirror at this magnet, and use external coil to obtain the magnetic field of the variation that produces by the vibration magnet.
Although light can it is desirable to apply with the reflecting layer of being made by gold, silver, aluminium the surface of catoptron 64 from the outer surface reflection of scanning mirror, or applies the surface of catoptron 64 with the dielectric coating of custom-designed high reflectance.
Inertia starter 66 is to be preferably greater than 5kHz and particularly the sweep speed high speed oscillatory scanning mirror 64 on 18kHz or higher level.This high sweep speed is inaudible frequency, therefore noise and vibration is reduced to minimum.Electromagnetic driver 70 is with other slower sweep speed oscillatory scanning mirror 68 of 40Hz level, and this sweep speed is the flicker that can be not too much to allow image to reside on people's the retina soon enough.
Catoptron 64 inswept horizontal scanning lines faster, and slower catoptron 68 vertical inswept horizontal scanning lines are created raster pattern grid or coarse parallel scan lines sequence thus, composing images thus.Every sweep trace has a plurality of pixels.Preferred image resolution is the XGA quality of 1024 * 768 pixels.We can show the television standard that the 720p of the high definition of 1270 * 720 pixels represents by limited operating distance.In some applications, 1/2nd VGA quality of 320 * 480 pixels, perhaps four of 320 * 240 pixels/once the quality of VGA enough.The resolution of minimum expectation 160 * 160 pixels.
The role of catoptron 64,68 can be opposite, so catoptron 68 is for faster, and catoptron 64 is slower.Can also design reflectivity mirror 64 with inswept vertical scan line, if like this catoptron 68 with inswept horizontal scanning line.Equally, can use inertia starter to drive catoptron 68.In fact, any one of two catoptrons can be driven by dynamo-electric, electric, mechanical, static, magnetic or electromagnetic driver.
Image be shown during, slower catoptron moves with constant velocity sweep-mode.During catoptron went back to, this catoptron was swept with its very high natural frequency and is got back to initial position.Returning in the way of catoptron, can make the laser instrument de-energisation to reduce the power consumption of this device.
Fig. 6 is in the actual realization as the equipment 20 in the identical skeleton view of Fig. 2.Said modules is installed on the support that comprises top cover 100 and step disk 102.Anchor clamps 104,106,108,110,112 are distinguished fixed fold formula catoptron 42,48 mutually alignedly, light filter 52,54 and bounce-back catoptron 62.Each anchor clamps has a plurality of locating slots and is used to accept to be fixedly mounted on reference column on the support.Therefore, catoptron and light filter are located rightly.As shown in the figure, three pillars are arranged, allow adjusting and lateral adjustments of two angles thus.Each anchor clamps can be glued to its final position.
Image is to make up by the pixel in elective irradiation one or more sweep trace.As below with reference to the more detailed description of Fig. 7, controller 114 impels in the grating selecteed pixel illuminated, and makes as seen by three laser beam.For example, red, indigo plant and green power supply controller 116,118,120 respectively conduction currents to red, indigo plant and green laser 22,28,34 to encourage to the latter, to launch light beam separately in each selected pixel, do not give red, indigo plant and green laser conduction current to give latter's de-energisation, not shine other unselected pixel.Irradiation that is produced and non-irradiated pixel have been formed image, and it can be any demonstration artificial or machine-readable information or figure.
With reference to figure 1, show raster pattern with the view that amplifies.From end points, inertia starter arrives opposite end points to form sweep trace along horizontal direction with the inswept laser beam of horizontal scan rate.Therefore, electromagnetic driver 70 vertically with the inswept laser beam of vertical bandwidth to another end points to form second sweep trace.Continue the formation of successive scan lines in an identical manner.
Under the control of microprocessor 114 or control circuit,, in grating, create image by the opening and closing of excitation or pulse laser device in times selected by operating power controller 116,118,120.When only the pixel in desired images was wanted to be seen, laser instrument just produced visible light and opens.Each color of pixel is determined by the color of one or more light beams.Any color in the visible spectrum can form by selectivity one or more red, blue and green lasers that superpose.The grid that grating is made up of a plurality of pixels on every line and the many lines.Image is the bitmap of selected pixel.Each letter or number, any graphic designs or sign, and or even machine-readable bar code symbol can form bitmap images.
As shown in Figure 7, incoming video signal has vertical and synchrodata level, and pixel and clock data, is sent to red, indigo plant and green buffers 122,124,126 under the control of microprocessor 114.Storing a complete VGA frame needs several kilobyte, and expects that impact damper has enough internal memories and is used for two complete frames, so that a frame can be written into, and the processed and projection of another frame simultaneously.Data in buffer is sent to formatter 128 under speed pattern (speedprofile) 130 controls, and send to red, blue and green look up tables (LUT) 132,134,136 proofreading and correct the intrinsic inner distortion that causes by scanning, and the geometric distortion that causes by the angles of display of the image of projection.Red, indigo plant that is produced and green digital signals are converted to red, indigo plant and green analog signal by digital to analog converter (DAC) 138,140,142.Redness is fed to equally and red redness and the blue laser driver (LD) 144,146 that links to each other with blue power-supply controller of electric 116,118 with blue analog signals.Green analog signal is fed to acousto-optic module (AOM) radio frequency (RF) driver 150, otherwise and presents the green laser 34 that links to each other with green power supply controller 120 with green LD 148 to equally.
Fig. 7 also shows FEEDBACK CONTROL, comprise with red, blue with green mould-number (A/D) on the contrary red, indigo plant and green photodiode amplifier 152,154,156 that converter 158,160,162 links to each other and also links to each other with microprocessor 114.Otherwise heat monitors by the thermistor amplifier 164 that links to each other with A/D converter 166 and link to each other with microprocessor.
Operation electric power management circuit 184 to be reducing to minimum with power consumption, simultaneously preferably by keeping green laser beam always, and realizes fast timely (fast on-times) by the thresholding that the electric current that keeps red and blue laser just is lower than emission laser.
If any one that detects scanning mirror 64,68 is out of position, then move laser safety shut-off circuit 186 to close laser instrument.
Set forth claim novel and that expectation is protected by patent certificate in the appended claims.
Claims (8)
1. image projection equipment (20) that is used for projection two dimension, coloured image comprising:
Support (100,102);
Laser assembly on the described support (100,102) (22,28,34), the multiple laser beam (58,56,38) that is used to launch different wave length;
Scanner (60) on the described support (100,102) is used for the pattern at inswept sweep trace on the space of operating distance of described support (100,102), and every sweep trace has a plurality of pixels;
With described laser assembly (22,28,34) and the controller (114) that described scanner (60) operability is connected, be used for impelling selected pixel illuminated, and make as seen, to produce image by described laser beam (58,56,38);
Support (100 between described laser assembly (22,28,34) and the described scanner (60), 102) optical module on, this optical module comprise and are used to focus on described laser beam (58,56,38) lens (24,26,30,32,44,46) and be used for described laser beam (58,56,38) be directed to the catoptron (42,48) and the dichroic filter (52,54) of described scanner (60); And
A plurality of anchor clamps (104,106,108,110), be used for fixing each catoptron (42,48) and dichroic filter (52,54), locate corresponding dichroic filter (52,54) and catoptron (42 in order to go up adjustable ground at described support (100,102), 48), before it is carried out the conllinear arrangement so that arrive described scanner (60) in laser beam (58,56,38).
2. according to the image projection equipment of claim 1, wherein said laser assembly comprises red solid-state semiconductor laser instrument (22), blue solid-state semiconductor laser instrument (28) and the green laser (34) that is used for generating respectively redness, blueness and green laser beam.
3. according to the image projection equipment of claim 1, wherein said laser assembly comprises diode pumping YAG laser instrument and the optical frequency-doubling device that is used to produce green laser beam.
4. according to the image projection equipment of claim 1, wherein said scanner (60) but comprise be used for first sweep speed along first direction and on first scan angle first oscillatory scanning mirror (64) of inswept described co-linear beams, and be used for second sweep speed that is different from first sweep speed along with the second direction of first direction perpendicular, but and with the second oscillatory scanning mirror (68) of the inswept described co-linear beams of second scan angle that is different from described first scan angle.
5. according to the image projection equipment of claim 2, wherein said laser assembly comprises and is used to modulate green beam to produce the acousto-optic modulator (36) of non-diffracted beam (38) and diffracted beam (40).
6. according to the image projection equipment of claim 5, wherein said laser assembly comprises the absorber (50) that is used for preventing to occur in described co-linear beams non-diffracted beam (38).
7. according to the image projection equipment of claim 1, wherein each dichroic filter (52,54) operation is used to reflect at least one of described light beam and is used at least one of the described light beam of transmission.
8. according to the image projection equipment of claim 1, each anchor clamps (104 wherein, 106,108,110) have to be used for admitting and be fixedly secured to described support (100, a plurality of locating slots of a plurality of reference columns 102), each described reference column is contained in the corresponding groove, is used for corresponding anchor clamps and the corresponding catoptron and the dichroic filter that remain on the corresponding anchor clamps are carried out angle and lateral adjustments.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/043,458 | 2005-01-26 | ||
| US11/043,458 US7367682B2 (en) | 2004-12-07 | 2005-01-26 | Color image projection arrangement and method |
| PCT/US2006/002649 WO2006081296A2 (en) | 2005-01-26 | 2006-01-25 | Color image projection arrangement and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101124514A CN101124514A (en) | 2008-02-13 |
| CN101124514B true CN101124514B (en) | 2010-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800032824A Expired - Fee Related CN101124514B (en) | 2005-01-26 | 2006-01-25 | Color image projection arrangement and method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7367682B2 (en) |
| JP (1) | JP2008529069A (en) |
| CN (1) | CN101124514B (en) |
| DE (1) | DE112006000276T5 (en) |
| TW (1) | TW200633547A (en) |
| WO (1) | WO2006081296A2 (en) |
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| US6170953B1 (en) * | 1999-03-22 | 2001-01-09 | Samsung Electronics Co., Ltd. | Laser video projector for projecting image to a plurality of screens |
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| US6545260B1 (en) * | 1999-11-19 | 2003-04-08 | Olympus Optical Co., Ltd. | Light scanning optical device which acquires a high resolution two-dimensional image without employing a charge-coupled device |
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| AU722995B2 (en) * | 1997-01-28 | 2000-08-17 | Christie Digital Systems Usa, Inc. | Laser video display system and method |
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| JP2003021800A (en) * | 2001-07-10 | 2003-01-24 | Canon Inc | Projection type display device |
| JP4080208B2 (en) * | 2002-01-22 | 2008-04-23 | フジノン株式会社 | Reflector holding structure |
| JP4009114B2 (en) * | 2002-02-06 | 2007-11-14 | 株式会社リコー | Laser optical device |
| US7924349B2 (en) * | 2002-05-15 | 2011-04-12 | Microvision, Inc. | Arrangement for and method of projecting an image with linear scan lines |
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- 2005-01-26 US US11/043,458 patent/US7367682B2/en not_active Expired - Fee Related
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2006
- 2006-01-25 TW TW095102817A patent/TW200633547A/en unknown
- 2006-01-25 WO PCT/US2006/002649 patent/WO2006081296A2/en active Application Filing
- 2006-01-25 JP JP2007552397A patent/JP2008529069A/en active Pending
- 2006-01-25 CN CN2006800032824A patent/CN101124514B/en not_active Expired - Fee Related
- 2006-01-25 DE DE112006000276T patent/DE112006000276T5/en not_active Withdrawn
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| CN1112802A (en) * | 1993-07-23 | 1995-11-29 | 施奈德电子无线电广播工厂有限公司 | Video projection system |
| US5966009A (en) * | 1994-12-28 | 1999-10-12 | The Nippon Signal Co., Ltd. | Electromagnetic actuator and manufacturing method therefor |
| US6170953B1 (en) * | 1999-03-22 | 2001-01-09 | Samsung Electronics Co., Ltd. | Laser video projector for projecting image to a plurality of screens |
| US6545260B1 (en) * | 1999-11-19 | 2003-04-08 | Olympus Optical Co., Ltd. | Light scanning optical device which acquires a high resolution two-dimensional image without employing a charge-coupled device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2008529069A (en) | 2008-07-31 |
| TW200633547A (en) | 2006-09-16 |
| US7367682B2 (en) | 2008-05-06 |
| DE112006000276T5 (en) | 2007-12-13 |
| WO2006081296A3 (en) | 2007-04-05 |
| WO2006081296A2 (en) | 2006-08-03 |
| US20060119804A1 (en) | 2006-06-08 |
| CN101124514A (en) | 2008-02-13 |
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